Bryan and Adam have 400 stickers.
After Bryan gives Adam 40 stickers,
Bryan has 210 more stickers than Adam.
- How many stickers does Bryan have at first?
- How many stickers does Adam have in the end?
|
Bryan |
Adam |
Before |
1 u + 250 |
1 u - 40 |
Change |
- 40 |
+ 40 |
After |
1 u + 210 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 210
= 2 u + 210
2 u + 210 = 400
2 u = 400 - 210
2 u = 190
1 u = 190 ÷ 2 = 95
Number of stickers that Bryan has at first
= 1 u + 250
= 95 + 250
= 345
(b)
Number of stickers that Adam has in the end
= 1 u
= 95
Answer(s): (a) 345; (b) 95